NewsLocation：Home >> News
Correlation analysis of factors that affect Terminal choice
Published：2013-07-10 10:03:13 Views：
At present, the power terminal block in the electrical and electronic equipment has become a trend, and power supply terminal block device itself is gradually increasing, and can carry a higher power, as Terminal size larger, their importance in terms of device capabilities are more prominent, and in terms of product characteristics also play an increasingly important role.
Below describe the key factors affecting Terminal choice.
Power factor
One of the first factors to be considered is the power handling capacity of the device. Simply reading the data sheet does not guarantee that access to accurate data. Engineers must understand the product performance data is listed in the manual how to test to determine.
At present, UL, IEC, CSA, DIN and other institutions in determining terminal block power and performance of the product and there is no uniform standard specifications. Users need to understand the difference between UL and IEC specifications. Specifications Terminal products made in Europe adopt IEC standards, while in the United States manufacturing product with UL standards.
Appearance factor
Although "power supply terminals" the name does not sound pretty, but many companies consider it both in terms of appearance and affinity to the user plays an important role. Power terminal block must be convenient for site installation, as they are often installed in front of the Panel are easy to see. In many industrial control systems, terminals are often technicians need to pay special attention to one of a small number of parts. Although its user interface is simpler (mainly screw), it is very important for the normal operation of the equipment.
In General, as the current increases, the wire becomes thicker, thick wire fastening torque required at the terminal needs to be increased. Therefore, screw of the power terminals need greater and more solid insulation shell. Sometimes using small screw to save space. Often true in very compact Terminal products. There are one-fourth inches or more in diameter of the wire, so that these small screws hard to deal with. When technicians and service when you need to install the lines, using large enough screws to simplify the connection can save big time. This early in the design process, the engineer heard the marketing sector is such an important cause.
When the terminals are used in consumer products, appearance is all the more important. In fact, some designers are often specified for audio equipment to gold-plated terminal devices, which increases cost and does not have a significant performance improvement, but gold does improve the appearance of the product.
Conclusion: power terminal block parameter measurement is a critical part of the system design. Confirm the selection of power supply terminals meet the temperature range power supply, electric current and voltage requirements help ensure the long-term reliability of the system. In addition, if you choose the power terminal block device wiring technology to meet market requirements, and guaranteed action by the user in the design, you can greatly improve the probability of success of the end product.